Bip39 seed to private key https://list.ly/i/11078004 Regardless that it utilizes BIP32 system you could continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There exists BIP44 Variation which some wallet use to the generation of seeds. BIP39 solves this through the use of human-readable seed phrases made https://gogogobookmarks.com/story20064308/bip39-release-date-bip39-github-an-overview-https-dzen-ru-bip39-phrase-com